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High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
| Lugar de origem | China |
|---|---|
| Marca | BAOSTEEL BENSTEEL HBIS XINGCHENG |
| Certificação | ISO 9001 |
| Número do modelo | 30CrMnSiA |
| Quantidade de ordem mínima | 10 kgs |
| Preço | 540 - 890 USD/Ton |
| Detalhes da embalagem | embalagem padrão para exportação |
| Tempo de entrega | 5 - 12 dias com base na quantidade |
| Termos de pagamento | L/C, T/T, Western Union |
| Habilidade da fonte | 20 toneladas por semana |
Detalhes do produto
| Produtos | 30CrMnSiA | Grossura | 10.0 - 200.0 mm |
|---|---|---|---|
| largura | 1000-2200mm | Comprimento | 2000-12000mm |
| Padrão | ASTM EN GB | Outro material | Aço carbono, aço ligado, aço inoxidável |
| Marca | BAOSTEEL XINYU XINGCHENG HBIS | Serviço | Corte |
Descrição de produto
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
Products Specification
| Product Name | 30CrMnSiA Alloy Steel Plate |
| Thickness | 10mm~200mm |
| Width | 1000~3000mm,common width is 1250mm,1500mm,2000mm,2200mm |
| Length | 1000~12000mm,can as your request cut |
| Surface | Clean,finished, blasting and painting or as your request |
| Delivery | Hot Rolled, Controlled Rolling,Normalizing,Annealing, Tempering,Quanching, Q+T |
| Packing | Steel Strapping,fixing in the Container,can customize |
| Thickness tolerance | ±0.3mm |
| Application | It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts. |
Premium Performance in Mission-Critical Environments
30CrMnSiA alloy steel is a high-strength, medium-carbon, quenched-and-tempered structural steel engineered for the most demanding aerospace and defense applications. Renowned for its exceptional tensile strength, impact toughness, and fatigue resistance, this material meets stringent military and aviation standards—making it ideal for components where reliability, durability, and weight efficiency are non-negotiable.
Manufactured under strict quality controls per GB/T 11251-2009 and GJB 2150A-2005 (China’s military specification), our hot-rolled 30CrMnSiA plates deliver consistent metallurgical properties across thicknesses from 10 mm to 200 mm. With full customization—including precision cutting, ultrasonic testing, and certified documentation—we support global aerospace OEMs, defense contractors, and engineering firms with mission-ready materials.
Why 30CrMnSiA Excels in Aerospace & Defense
| Attribute | Benefit in Critical Applications |
|---|---|
| Tensile Strength ≥1080 MPa | Supports high-load structures without excessive mass |
| High Hardenability | Enables uniform through-thickness properties in thick sections |
| Good Low-Temperature Toughness | Maintains ductility down to –40°C (critical for high-altitude or arctic operations) |
| Controlled Impurity Levels | Ultra-low S/P content minimizes crack risk in welded or forged parts |
| Excellent Machinability (after annealing) | Facilitates complex component fabrication with tight tolerances |
| Proven Track Record | Widely used in Chinese fighter jets, armored vehicles, and missile systems |
⚠️ Note: Due to its medium-carbon composition, welding requires preheating (200–300°C) and post-weld stress relief to prevent hydrogen-induced cracking.
Chemical Composition (GB/T 11251 Standard)
| Element | Content (%) | Purpose |
|---|---|---|
| Carbon (C) | 0.28 – 0.34 | Core strength via martensite formation |
| Silicon (Si) | 0.90 – 1.20 | Solid-solution strengthening; deoxidizer |
| Manganese (Mn) | 0.80 – 1.10 | Enhances hardenability and hot workability |
| Chromium (Cr) | 0.80 – 1.10 | Improves wear resistance and deep hardening |
| Sulfur (S) | ≤ 0.025 | Minimized to avoid hot shortness |
| Phosphorus (P) | ≤ 0.025 | Controlled to prevent cold brittleness |
| Residuals (Ni, Cu, etc.) | ≤ 0.30 total | Kept low for purity and weld integrity |
The “A” suffix denotes higher purity vs. standard 30CrMnSi—essential for safety-critical parts.
Mechanical Properties (After Quenching & Tempering)
| Property | Typical Value | Test Standard |
|---|---|---|
| Tensile Strength (Rm) | 1080 – 1275 MPa | GB/T 228.1 |
| Yield Strength (Rp0.2) | ≥ 835 MPa | GB/T 228.1 |
| Elongation (A5) | ≥ 10% | GB/T 228.1 |
| Reduction of Area (Z) | ≥ 45% | GB/T 228.1 |
| Impact Energy (20°C) | ≥ 39 J | GB/T 229 |
| Impact Energy (–40°C) | ≥ 88 J (premium grade) | GB/T 229 |
| Hardness | 24–32 HRC (Q&T); ≤229 HB (as-rolled) | GB/T 231.1 / ISO 6508 |
Properties optimized for thickness ≤100 mm; slight variation may occur in ultra-thick plates (>150 mm).
Typical Aerospace & Defense Applications
| Sector | Components |
|---|---|
| Military Aircraft | Landing gear struts, wing spars, engine mounts, bulkheads |
| Helicopters | Transmission housings, rotor hubs, tail boom fittings |
| Armored Vehicles | Structural frames, suspension arms, turret supports |
| Missile Systems | Launch canisters, guidance housing, thrust brackets |
| Naval Platforms | High-stress deck fittings, weapon cradles |
| Unmanned Systems (UAVs/UUVs) | Payload frames, actuator housings requiring strength-to-weight ratio |
30CrMnSiA often replaces heavier carbon steels or more expensive nickel alloys when high strength at moderate cost is required.
Available Product Specifications
| Parameter | Details |
|---|---|
| Form | Hot-rolled plate (black scale) |
| Thickness | 10 mm – 200 mm |
| Width | 1000 – 3000 mm (custom up to 3500 mm) |
| Length | 2000 – 12,000 mm |
| Tolerances | Per GB/T 709 (Class N); tighter on request |
| Surface Options | As-rolled, shot-blasted, pickled, or oiled |
| Certifications | Mill Test Report (EN 10204 3.1), UT per ASTM A578 (optional) |
Custom Processing Services
We provide end-to-end support beyond raw plate supply:
- Precision Cutting: Waterjet (up to 200 mm), plasma, or laser per your CAD files
- Edge Preparation: Beveling for welding readiness (ISO 9692 compliant)
- Ultrasonic Testing (UT): Full-volume inspection for internal flaws (Grade B/C per ASTM A578)
- Heat Treatment: In-house Q&T or subcontracted to certified partners
- Marking & Traceability: Laser/steel stamp with heat number, batch ID, and compliance codes
All processed parts are packaged to MIL-STD-2073 or customer-specific requirements.
Quality Assurance & Compliance
- ✅ ISO 9001:2015 certified production
- ✅ Full chemical & mechanical test reports
- ✅ Batch traceability from melt to delivery
- ✅ Third-party inspection accepted (SGS, BV, TÜV, etc.)
- ✅ RoHS and REACH compliant (upon request)
Technical Support & Global Delivery
Our metallurgical team assists with:
- Material selection vs. alternatives (e.g., 4340, 300M, 40CrNiMoA)
- Welding procedure specifications (WPS)
- Heat treatment cycle optimization
- Export documentation (COO, CE, MSDS)
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